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Rifles, Reloading, Optics, Equipment
Reloading
270WSM great grouping
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<blockquote data-quote="Hawk in WY" data-source="post: 1361702" data-attributes="member: 70947"><p>At .020 off the lands you don't have much to play with. I happen to have a .300 Win Mag load open on QuickLOAD. Increasing the COAL by 0.020 reduces pressure by 500 psi. Probably, not enough to make a difference.</p><p></p><p>You don't want to be touching the lands particularly in a hunting rifle. Pressure spikes and you can pull a bullet unloading if well into the lands. I would reduce the powder charge in 0.2 grain steps and see what you get. There will be a lower accuracy node eventually.</p><p></p><p>You also need to take into account the temperature at which you shot the good groups. If in summer time, pressure might be just fine at lower temperatures. 7828SC is a bit temperature sensitive. Of course, the accuracy might not be as good at lower temperatures as well.</p><p></p><p>Good luck.</p></blockquote><p></p>
[QUOTE="Hawk in WY, post: 1361702, member: 70947"] At .020 off the lands you don't have much to play with. I happen to have a .300 Win Mag load open on QuickLOAD. Increasing the COAL by 0.020 reduces pressure by 500 psi. Probably, not enough to make a difference. You don't want to be touching the lands particularly in a hunting rifle. Pressure spikes and you can pull a bullet unloading if well into the lands. I would reduce the powder charge in 0.2 grain steps and see what you get. There will be a lower accuracy node eventually. You also need to take into account the temperature at which you shot the good groups. If in summer time, pressure might be just fine at lower temperatures. 7828SC is a bit temperature sensitive. Of course, the accuracy might not be as good at lower temperatures as well. Good luck. [/QUOTE]
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Reloading
270WSM great grouping
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